This thermostat must be installed and configured through the ecobee platform before it can integrate with Alarm.com.
Additional Considerations
This thermostat requires a Wi-Fi connection to integrate with Alarm.com; it is not a Z-Wave thermostat.
Any questions about installing the thermostat, adding the thermostat onto an ecobee account, or features not available through Alarm.comon ecobee Smart Thermostats should be directed to ecobee.